Coil-pressing apparatus



1955 s. H. BROWNING COIL-PRESSING APPARATUS 2 Sheets-Sheet 1 Filed Feb. 5. 1950 INVENTOR.

Dec. 13, 1955 s. H. BROWNING COIL-PRESSING APPARATUS 2 Sheets-Sheet 2 Filed Feb. 3, 1950 INVENTOR.

United States Patent 9 COIL-PRESSING APPARATUS Samuel H. Browning, Birmingham, Ala.

Application February 3, 1950, Serial No. 142,190

1 Claim. 01. 153-1 This invention relates to pressing apparatus, and it has special reference to such apparatus for applying embracing binding clips or bands to multi-part members, such particularly as pre-formed armature coils.

In the formation of such coils the winding thereor ordinarily leaves the strands in more or less non-compact condition, and in order that they may be in proper form for installation it is essential that the strands be compressed into compact arrangement and thus held by appropriate embracing bands or clips usually of strip form passed around the groups of strands and embracing the same and pressed into flat, intimate engagement, and hence into substantially cross-sectional conformity, therewith.

In order that proper compacting of the strands of the coils, and application of the clips or bands thereto, may be accomplished, assuming that the coils are of the usual rectangular cross-section, pressure must be applied in two directions, namely flatwise and edgewise of the coils.

With these requirements in mind, one object of the invention is to provide apparatus capable of applying pressure, preferably successively, in these two directions.

Another object of the invention is to provide in a single, relatively simple, apparatus, means for supporting a coil winding with partially closed embracing binding clips or bands applied thereto, and applying pressure flatwise and edgewise to the coil and clips or bands while the coil is thus supported.

A further object is to provide apparatus of this character in which the pressing members are fluid actuated as by so-called hydraulic cylinder means conveniently regulated by pedal operated control means of known type, thus leaving the operators hands free for manipulation of the coils with respect to the pressing mechanism.

A still further object is to so form the coil supporting and pressing members of the pressing mechanism that they may be replaceable to adapt the apparatus to the pressing of coils of various styles or types and dimensions.

Still another object is to provide in the coil contacting faces of the supporting and pressing members recesses or depressions substantially conforming to the crosssectional dimensions or the material from which the clips or bands are formed, in order that although, during the pressing operations, both the coil and clips or bands will'be properly compacted and alfixed, respectively, the clips or bands will not tend to become embedded in or injure the insulation of the strands forming the coils.

The invention comprises a coil pressing and clip applying apparatus preferably of vise type, including a fixed jaw and a movable jaw for applying pressure to a coil and its clips or bands in one direction, preferably flatwise of-the coil, a coil supporting member which may be attached to one of said jaws, a presser member movable toward and away from said supporting member for applying pressure to the coil in a direction substantially normal to the direction in which said jaws function, that is to say preferably edgewise of the coil, means under control of the operator for actuating said movable jaw 2,726,700 Patented Dec. 13, 1955 and said presser member to apply strand-compacting and clip-clinching pressure to said coil and clips, and means for automatically retracting said movable jaw and presser member after completion of the pressing operation at the will of the operator, all as will be explained hereinafter more fully and finally claimed.

In the accompanying drawings, in the several figures of which similar parts bear like designations,

Fig. 1 is a side elevation of the apparatus of the invention,

Fig. 2 is a front elevation thereof,

Fig. 3 is a sectional plan of a suitable three-way pedaloperated fluid pressure applicator and control valve of known type, one of which is used for actuation in regulating operation of the pressing jaws and another for the presser member,

Fig. 4 is an enlarged sectional elevation of parts of the apparatus taken on the'line 4-4 of Fig. 5 and showing a conventional type of armature coil with applied clips in position in the pressing mechanism,

Fig. 5 is a sectional elevation taken through the apparatus on the line 5-5 of Fig. 4 but with the jawcarrying arm fully shown.

Fig. 6 is a fragmentary plan view showing the jawcarried pressing members and coil supporting member, and

Figs. 7 and 8 show, respectively, in fragmentary transverse section, a coil of the type shown in Figs. 4 and 5, with clips applied, before and after pressing.

As shown in Figs. 1 and 2, the apparatus is mounted upon a table 1, but it may, obviously, be mounted upon a bench or other stand or support.

The vise-like press comprises a body 2, bolted or otherwise secured to its support 1, having a fixed jaw-carrying arm 3 provided with guide faces 4 upon which is mounted a slidable jaw carrier 5 attached to the piston rod 6 of a hydraulic cylinder 7 secured to an extension 8 of the body 2. This hydraulic cylinder and piston mechanism is of the conventional type in which only one fluid passage communicates with the cylinder and serves for both inlet and exhaust of the pressure fluid, so that the piston is moved outward (to the right, Fig. l) by fluid pressure and is retracted by a spring 9 anchored at its ends to the body extension 8 and slidable jaw carrier 5.

A standard 10 aflixed to the slidable jaw carrier 5 has at its upper end a laterally oflstanding bracket 11 to which is aflixed a hydraulic cylinder 12 the piston rod (not shown) of which carries a guide plate 13 travelling on guide pins 14 fixed to the standard 10, and to this guide plate 13 is secured a clamp bar 15 in which is removably clamped by set screws 16 the presser member 17. The.

hydraulic cylinder mechanism 12 is similar to and oper' ates in the same manner as that of the vise-like clamping or pressing members 35, so that downward movement is imparted to its piston and to the clamp bar 15 by fluid pressure, and springs 18 anchored to the bracket 11 of the standard 10 and to the guide plate 13 serve to impart upward or return movement.

Removably and replaceably secured to the fixed jaw member 3 and slidable jaw member 5 are jaw face members 19 and 20, respectively, to the under face of one of which, preferably to the face member 19 of the fixed jaw member 3, is aifixed a support member 21 the freeedged lip of which is capable of sliding movement below and preferably in contact with the bottom of the jaw face member 20 (see Fig. 5) to thus provide a complement to the presser member 17 actuated by the cylinder 12. The presser member 17 and jaw face members 19 and 20 are made removable and replaceable in order to accommodate the apparatus to various types and sizes of coils to be pressed.

As shown particularly in Figs. 4, 5 and 6, the coil contacting faces of" the jaw face members 19 and 20 and the support memberll; are provided witli recesses 22" of appropriate width and depth to accommodate the coil clips, and'the. presser member 17 is provided. with similarly appropriate notches. 23 in. its lower or Ieading, .coil..

contacting edge.

As shown in Figs, '1, 2. and 3', the combined fluid pres.-

sure applicator" and valve mechani'smof known type one.

of which a and b is connected. with each of. the hydraulic cylinders. 7 and 12-by a suitable conduit 24 and 25, re-

spectively, has three operating. pedals 26, 27. and 28,

for; actuation, respectively, of the piston of a master cylind'er 29'whi'ch, with connecting passages including the. concylinderi30 connected withthe. master. cylinder, and a. release valve. 31. connected; with the conduit 24, 25. and the'master cylinder 29.

Having reference particularly to .Fig. 3,.it will be seen that the master cylinder 29.is connected through a passage f 32. controlled by a ball check valve with a cross duct 33" to which the conduit 24, 25' leading 'to the hydraulic cylinder 7, His connected, and this duct communicateswith a, bore 34 containing the spring-seated ball of the release valve 31, thisball adapted to be unseated by depression ofthe release pedal 28 to establish through a cross passage..35 communicationbetween the hydraulic cylinder 7, 12 and the...master cylinder 29. Through a passageway 36' the master cylinder 29 is' connected to the'booster cylinder 30,. a ball. check being, interposed to prevent return flow when the. booster piston is operated'by pumping on thebooster pedal'27, and. communie cylinder-7,12 is established. through cross bores 37 con-.

nected with the master cylinder passage 32.

By this arrangement it will. be. apparent that when .themaster cylinder pedal, zsjis depressed hydraulic fluid the hydraulic cylinder 7,.12. Obviously, when the release. pedal 28 is depressed the hydraulic fluid will return to the master cylinder 29 through its connecting passages 34 and'35;

As shown in Figs. 4, 5,. 7 and. 8, and. particularly in. Figs. 7 and 8, the coil 0 is composed of a strand of insulated; wire or strip 38 wound upon itself to a double. thick,-. ness'of'eight turns each and terminating in. leads. 39' and.

cation between; the booster cylinder and the hydraulic 40 at'itsinitial and terminalends as. respects. the senseof r its winding. To this. coil, which is of relatively flat or elongated rectangular form in-cross section, is applied a number of suitably spaced" embracing binding, clips or bands 41 of sufficient stifiiness normally, to maintain the coiI in its proper condition as-wound' until, it can be. pressed.

and coated or lacquered'as is customary. The clips. thus apppli'ed' will" appear more or less as'shown in Fig.. 7,v and.

Thus, in the operationof the. apparatus of the invention, with the movable jaw member- 5 and the presser member.

17 retracted, as shown in Figs. l and'2, a prepared coil is. slippedover the.free.-edg ed lip oi the support. member. 21

with clips registering in the recesses 22 (Fig.4), and is thus suspended by its upper turn. Then the master pedal 26 of control a is depressed to advance the slidable jaw member 5 so that its face member 20 bears against the coil, and the booster pedal 27 is operated to augment the pressure to any amount desired. With the coil thus pressed and held between the face members 19 and 20, the master pedal 26 of control-bis depres'sedto advance the presser member'17 against theupper edge of the coil and compress it and its clips againstthe support member 21. The pressure thus applied maybe augmented by operation of the booster pedal 27 of. control bi. 7

When this pressing operation has been completed, the release pedals 28 of bothv the controla and b are tripped and the sliding jaw carrier and presser member are 'retracted by their respective springs. 9 and 18.

Various changes and modifications are consideredto be within the principle of the invention. andthe scope of the following claim. 7

What. I claim is: V

In apparatus for applying in two directions. normal} to.

each other compacting pressure to pre-formed loop-shaped porting member having a free-edgedv lip capable of sliding.

movement below and engageable with the bottom'surface. of the other jaw, and over which the loop of. the coil may be arranged so that the supporting member may extend.

through the opening of said loop to therebysuspend' the coil by its upper turn and'position. the said" faceareas. thereof in'prcssure receiving relation between said jaws', .a. presser member carried. by' and above one of said jaws and reciprocable toward'and' away from said supporting.

member when said jaws. are engaged'upon said .coil', saidf presser member serving with said" supporting member to furnish means for applying pressure to the edgelareas of the coil normal to said face areas; the coil-contacting. faces of said jaw members and said. supporting, member and presser member being provided with recesses to ac commodate said. clips and prevent their depression into.

the coil. windings during the pressing' operation, means for relatively moving said jaws toward and away from each other to apply pressure throughoutv said opposite face areas of the coil, and meansoperable independently of said'jaw moving means for moving said presser'memher in a direction substautially'normal 'to said jaw movement for applying pressure'throughout. the said edge" areas of said coil. I

References Citedin the file of this patent UNITED STATES PATENTS.

498,810 Norton. June-6,. k893i 890,500 Cooper June 9,. 1908' 1,474,882 Baumgarten Nov. 20,; 19 23 1,720,133, LeRoy July 9;. 1.929 1,721,810 Carter July" 23... 1929 1,848,867. Callaway -1 Mar. 8,.1932: 1,869,184 Burr Iuly 26,;-l9.:3 2;1 2,015,646 Chase .Sept.'24, 1935' 2,086,992 Weber '..Iuly- 13, 1-937 7 2,182,663 7 Eby Dec. 5, 19.39 2,253,713 Lancaster Aug. 26,. 1941. 2,334,797 Stucldey .Nov. 23,1943. 2,506,219- James May-2,1959 

